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Petlas Snow Master W601 View Gallery (1)

Petlas Snow Master W601

Petlas Tyres Touring Winter

The Petlas Snow Master W601 is a Touring Winter tyre designed to be fitted to Passenger Cars.

6.9
Tyre Reviews Score Based on User Reviews
Limited Confidence View Breakdown
Dry Grip
79%
Wet Grip
69%
Road Feedback
79%
Handling
86%
Wear
80%
Comfort
80%
Buy again
90%
Snow Grip
90%
Ice Grip
70%
7 Reviews
80% Average
84,500 miles driven
Petlas Snow Master W601

Petlas Snow Master W601

Winter Economy
BETA
6.9 / 10
Based on User Reviews · Limited Confidence · Updated 30 Jan 2026

The Tyre Reviews Score is the most comprehensive tyre scoring system available. It aggregates professional test data from multiple independent publications, user reviews, and consistency analysis using Bayesian statistical methods, weighted normalisation, and recency-adjusted scoring to produce a single, reliable performance rating.

Learn more about our methodology
Score Components
Professional Tests
Weight: 80%
Tests: 0
Publications: 0
User Reviews
Weight: 15%
Reviews: 7
Avg Rating: 80.2%
Min Required: 5
Consistency
Weight: 5%
Score Std Dev: 2.57
History Points: 6
Methodology & Configuration
Scoring Process
  1. Collect Test Data: Gather results from professional tyre tests across multiple publications. Minimum 1 test(s) required.
  2. Normalize Positions: Convert test positions to percentile scores using exponential weighting (factor: 1.2).
  3. Apply Recency Weighting: More recent tests are weighted higher with a decay rate of 0.95.
  4. Incorporate User Reviews: Factor in user review data (minimum 5 reviews). Weight: 15%.
  5. Bayesian Smoothing: Apply Bayesian prior (score: 7, weight: 1.5) to prevent extreme scores with limited data.
  6. Calculate Final Score: Combine all components using normalization factor of 1.1. Max score with limited data: 9.5.
Component Weights
Test Data
80%
User Reviews
15%
Consistency
5%
All Configuration Parameters
ParameterValueDescription
safety_weight 0.7 Weight multiplier for safety-related metrics
performance_weight 0.55 Weight multiplier for performance metrics
comfort_weight 0.4 Weight multiplier for comfort metrics
value_weight 0.45 Weight multiplier for value-for-money metrics
user_reviews_weight 0.15 How much user reviews contribute to the final score
test_data_weight 0.8 How much professional test data contributes to the final score
consistency_weight 0.05 How much score consistency contributes to the final score
recency_decay_rate 0.95 Rate at which older test results lose influence (higher = slower decay)
min_test_count 1 Minimum number of professional tests required
min_review_count 5 Minimum number of user reviews required
score_version 1.8 Current version of the scoring algorithm
score_normalization_factor 1.1 Factor used to normalize raw scores to the 0-10 scale
confidence_factor_weight 0.2 How much data confidence affects the final score
position_penalty_weight 0.2 Penalty applied for poor test positions
gap_penalty_threshold 8 Score gap (%) that triggers additional penalties
min_metrics_count 2 Minimum number of test metrics needed per test
limited_data_threshold 2 Number of tests below which data is considered limited
single_test_penalty 0.1 Score multiplier when only one test is available
critical_metric_penalty 0.7 Penalty for poor performance on critical safety metrics
critical_metric_threshold 70 Score below which a critical metric penalty applies
position_exponential_factor 1.2 Exponent used to amplify position-based scoring
position_exponential_threshold 0.9 Position percentile below which exponential scoring applies
gap_multiplier_critical 3 Multiplier for critical gap penalties
max_category_weight 2 Maximum weight any single category can have
max_score_limited_data 9.5 Score cap when data is limited
bayesian_prior_weight 1.5 Weight of the Bayesian prior in smoothing
bayesian_prior_score 7 Prior score used for Bayesian smoothing
evidence_test_multiplier 1.9 Multiplier for test evidence in confidence calculation
evidence_metric_divisor 3 Divisor for metric count in evidence calculation
evidence_review_divisor 10 Divisor for review count in evidence calculation
All Tests

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Top 3 Petlas Snow Master W601 Reviews

Given 80% while driving a Ford KA 1.3 (225/45 R17) on mostly town for 10,000 spirited miles
Definitely worths a try. I had not many choices for my Ka with original wheels. I only got these just so I wouldn't be stuck if it snows. I was pretty happy with it, very slow wear, very cheap to buy, worked good on light to moderate snowing with very minor icing here and there in town. Definitely very good with even the heaviest rain. It's loud, but given it's a Ka, not much of a deal. Comfort were mostly okay.
Ask a question | Helpful 803
February 2, 2022
Given 76% while driving a Toyota Starlet (155/80 R13 T) on mostly country roads for 15,000 average miles
Very good tyre in snowy and ice road.I had never stuck.
Ask a question | Helpful 556
January 13, 2017
Given 66% while driving a Ford KA 1.3 (155/70 R13) on mostly town for 2,500 average miles
First things first: this is a cheap tyre. For about 150 euros/set, they were a bang for the buck. About performance: this is a good winter tyre, good grip on dry as well as braking, VERY good grip in snow (i was driving with confidence with the kittle Ka with over 70 km/h on a road covered with 5 cm of fresh snow with no problems at all) braking distance was decent. In fact, i can easily compare them with the Continental Contiwintercontact TS850 regarding driving in snow.
Now for the downsides: braking in wet conditions is horrible, you need to take a good distance from the front car if you don't want to crash in case of emergency. So goes with acceleration, the little 70 hp car will spin and spin and so on. Cornering is quite ok to say.. in wet conditions. I don't say it's a dangerous tyre, but caution must be exercised if it's raining. They are not noisy if it is cold outside, but if temperatures will reach about 10 deg C and above, they will make a lot of noise (the car has a poor sound dampening). I cannot comment too much about wear taking in consideration the fact that they were driven about 4000 km. I can say that in this time, with careful driving and managing they lost about 1.2 mm on front and about 0.5 on the back. I can say that this is not a strong point of them if you're planning to go lots of miles. For me it is ok, they will go for about 4, maybe 5 seasons.
Ask a question | Helpful 518
March 10, 2015
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Latest Petlas Snow Master W601 Reviews

Given 71% while driving a Ford KA 1.3 (155/70 R13) on mostly town for 4,000 average miles
Have about 3000 km with these tyres, and they're pretty good all rounder winter tyres, especially for their price.
Grip in dry is average, nothing special.
Grip in snow is fenomenal, I couldn't believe that they are cheap winter tyres. Very good traction, braking cornering, control. The ride was marked with confidece at say.. 80-90 km/h in 5 cm of new snow. In deep snow, got traction to the point when it almost reached the hood. No occasion to test them on black ice.
Grip in wet conditions - terrible. Bad traction, they will lose grip very fast, very bad braking, almost as going in snow. Although they won't lose grip during corners, this is a big minus.
Road feedback ok, not too noisy, soft sidewall resulting in a pretty comfortable ride.
A best bang for the buck from my perspective and I would recommend them any time, to anyone looking for a budget tyre. The car being driven mainly in town, a premium tyre was not necessary at all.
Ask a question | Helpful 514
December 28, 2014